28138513483 has 4 divisors (see below), whose sum is σ = 28156633848. Its totient is φ = 28120393120.

The previous prime is 28138513477. The next prime is 28138513523. The reversal of 28138513483 is 38431583182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28138513483 - 2⁹ = 28138512971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28138543483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9057853 + ... + 9060958.

It is an arithmetic number, because the mean of its divisors is an integer number (7039158462).

Almost surely, 2^28138513483 is an apocalyptic number.

28138513483 is a deficient number, since it is larger than the sum of its proper divisors (18120365).

28138513483 is a wasteful number, since it uses less digits than its factorization.

28138513483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18120364.

The product of its digits is 552960, while the sum is 46.

The spelling of 28138513483 in words is "twenty-eight billion, one hundred thirty-eight million, five hundred thirteen thousand, four hundred eighty-three".